In my area, there's basically 3-4 gym options with professional coaching on lifts. I see HS coaches encouraging kids to lift at the school, as if to say they don't want kids elsewhere instead. I get it if they're at Lifetime or Xsport or Planet Fitness, but they are probably getting better training on technique at your crossfit, or athlete training facility vs the open gym concept. No doubt that kids in this area are active in 2-3 sports and lifting also. I just haven't seen it translate to Ws like I honestly believed it would. So while I agree that lifting is crucial, I can say positively it does not always equate to Ws. Scheme and coaching play a big role along with just flat out talent. Nowadays there are some coaches that are sound in lifting techniques. Schools with those coaches, hold in to those coaches........not easy to come by........ There is so much more than your basic lifts now that are so valuable.
I did track just to develop speed and cardio fitness. That sub 6 mile end of the Summer, not a problem at all. I like the track idea still for kids who don't have a spring sport. Great way to get away from heavy load on shoulder joints and back stress all week long in the gym.
Diversification in training is good not just for the body but also the mind, reducing burnout/mental fatigue.